HEIDENHAIN TNC 320 (340 55x-05) Cycle programming - Manual (Page 375)

HEIDENHAIN TNC 320 375
16.4 MEA
S
URE ANGLE (Cy
c
le 420, DIN/ISO: G420)
16.4 MEASURE ANGLE (Cycle 420,
DIN/ISO: G420)
Cycle run
Touch Probe Cycle 420 measures the angle that any straight surface
on the workpiece describes with respect to the reference axis of the
working plane.
1 The TNC positions the touch probe at rapid traverse (value from
FMAX column) following the positioning logic (see “Executing
touch probe cycles” on page 285) to the programmed starting
point
1 . The TNC offsets the touch probe by the safety clearance
in the direction opposite the defined traverse direction.
2 Then the touch probe moves to the entered measuring height and
probes the first touch point at the probing feed rate (column F).
3 Then the touch probe moves to the next starting position 2 and
probes the second position.
4 The TNC returns the touch probe to the clearance height and saves
the measured angle in the following Q parameter:
Please note while programming:
X
Y
1
2
Parameter number Meaning
Q150 The measured angle is referenced to the
reference axis of the machining plane.
Before a cycle definition you must have programmed a
tool call to define the touch probe axis.
If touch probe axis = measuring axis, set Q263 equal to
Q265
if the angle about the A axis is to be measured; set
Q263 not equal to Q265 if the angle is to be measured about
the B axis.